INVENTORIES, NET (Details Textual) (USD $)	12 Months Ended
Jan. 31, 2013
Increase Decrease In Slow Moving Inventory	$ 288,000

The increase (decrease) during the reporting period in the aggregate value of slow moving inventory held by the reporting entity

No definition available.

Name:	lake_IncreaseDecreaseInSlowMovingInventory
Namespace Prefix:	lake_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration